Method and device for judging reasonable temperature rise of electric cabinet caused by current

Abstract

The present invention provides a method and device for judging a reasonable temperature rise of an electric cabinet caused by current, wherein the method includes: S1, establishing an artificial neural network with current as input and temperature rise as output for each temperature monitoring point of the electric cabinet Model, according to the historical data of the current and its corresponding temperature rise in the normal state of the electric cabinet, train the artificial neural network model, and obtain the trained artificial neural network model; S2, obtain the current current of the electric cabinet and its corresponding current temperature rise, Input the current current into the trained artificial neural network model to obtain the first theoretical temperature rise, and perform error analysis on the current temperature rise and the first theoretical temperature rise. If the error analysis result is less than or equal to the preset error threshold, the temperature rise of the electric cabinet normal. The invention solves the technical problem that the method of judging whether the heating of the equipment is normal by judging whether the measured temperature or the temperature rise exceeds the preset threshold cannot timely find the hidden danger of abnormal temperature rise under the condition of small current.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to a method and device for judging a reasonable temperature rise of an electric cabinet caused by current. Background technique [0002] The cause of switch burning accidents is often the unreasonable or increased contact resistance at the switch contacts and internal conductor component joints. When the normal working current passes, the contact resistance generates more heat, resulting in an abnormal increase in temperature. If the electric cabinet is operated under the condition of overheating of the components for a long time, the insulation will gradually age or even burn out, and then a short circuit fault or leakage will occur, which may eventually lead to a serious electrical accident or electrical fire. [0003] The existing temperature measurement system of the electric cabinet only judges whether the equipment heating is normal by judging whether the measured temperatu...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and device for judging the reasonable temperature rise of the electric cabinet caused by current, which solves the problem that the method of judging whether the heating of the equipment is normal by judging whether the measured temperature or the temperature rise exceeds the preset threshold cannot detect the small current situation in time The technical problem of the hidden danger of abnormal temperature rise

Images